Reye's syndrome: Children and teenagers who have or are recovering from chicken pox or flu-like symptoms should not use this product. When using this product, if changes in behavior with nausea and vomiting occur, consult a doctor because these symptoms could be an early sign of Reye's syndrome, a rare but serious illness. Allergy alert: Aspirin may cause a severe allergic reaction, which may include: hives facial swelling shock asthma (wheezing) Allergy alert: Acetaminophen may cause severe skin reactions. Symptoms may include: skin reddening blisters rash If a skin reaction occurs, stop use and seek medical help right away. Liver warning: This product contains acetaminophen. Severe liver damage may occur if you take more than 4,000 mg of acetaminophen in 24 hours with other drugs containing acetaminophen 3 or more alcoholic drinks every day while using this product . taking a prescription drug for diabetes, gout, or arthritis taking any other drug or are under a doctor's care for any serious condition Stop use and ask a doctor if an allergic reaction Occurs. Seek medical help right away. you experience any of the following signs of stomach bleeding: feel faint vomit blood have bloody or black stools have stomach pain that does not get better ringing in the ears or a loss of hearing occurs new symptoms occur redness or swelling is present pain gets worse or lasts for more than 10 days fever gets worse or lasts for more than 3 days These could be signs of a serious condition. If pregnant or breast-feeding, ask a health professional before use. It is especially important not to use aspirin during the last 3 months of pregnancy unless definitely directed to do so by a doctor because it may cause problems in the unborn child or complications during delivery. Keep out of reach of children. In case of accidental overdose, get medical help or contact a Poison Control Center right away. Prompt medical attention is critical for adults as well as for children even if you do not notice any signs or symptoms. Stomach bleeding warning: This product contains an NSAID, which may cause severe stomach bleeding. The chance is higher if you take more or for a longer time than directed have had stomach ulcers or bleeding problems take a blood thinning (anticoagulant) or steroid drug are age 60 or older take other drugs containing prescription or nonprescription NSAIDS [aspirin, ibuprofen, naproxen, or others] have 3 or more alcoholic drinks every day while using this product Caffeine warning: The recommended dose of this product contains about as much caffeine as a cup of coffee. Limit the use of caffeine-containing medications, foods, or beverages while taking this product because too much caffeine may cause nervousness, irritability, sleeplessness, and, occasionally, rapid heart beat. Do not use if you have ever had an allergic reaction to acetaminophen, aspirin, or any other pain reliever/fever reducer with any other drug containing acetaminophen (prescription or nonprescription). If you are not sure whether a drug contains acetaminophen, ask a doctor or pharmacist. if you have ever had an allergic reaction to this product or any of its ingredients Ask a doctor before use if you have asthma you have a history of stomach problems, such as heartburn you are taking a diuretic you have high blood pressure, heart disease, liver cirrhosis, or kidney disease stomach bleeding warning applies to you have liver disease Ask a doctor or pharmacist before use if you are.